System monitoring
Page 93
FortiRecorder 2.4.2 Administration Guide
Log severity levels
Each log message contains a
Severity
(
pri
) field that indicates the severity of the event that
caused the log message, such as
pri=warning
.
For each location where the FortiRecorder appliance can store log files (disk, Syslog or
FortiAnalyzer), you can define a severity threshold. The FortiRecorder appliance will store all log
messages equal to or exceeding the log severity level you select.
For example, if you select
Error
, the FortiRecorder appliance will store log messages whose log
severity level is
Error
,
Critical
,
Alert
, and
Emergency
.
Viewing log messages
You can use the web UI to view and download locally stored log messages. (You cannot use the
web UI to view log messages that are stored remotely on Syslog or FortiAnalyzer devices.) Log
messages are in human-readable format, where each log field’s name, such as
Message
(
msg
field when viewing a raw, downloaded log file), indicates its contents.
To view log messages
1.
Go to either
Monitor > Log Viewer > Event
(to view event logs about the appliance itself) or
Monitor > Log Viewer > Camera
(to view logs about connected cameras).
Columns and appearance varies slightly by the log type.
Initially, the page displays a list of log files of that type.
2.
Double-click the row of a log file to view the log messages that it contains.
Table 10:
Log severity levels
Level
(0 is greatest)
Name
Description
0
Emergency
The system has become unusable.
1
Alert
Immediate action is required.
2
Critical
Functionality is affected.
3
Error
An error condition exists and functionality could be
affected.
4
Warning
Functionality could be affected.
5
Notification
Information about normal events.
6
Information
General information about system operations.
Avoid recording log messages using low log severity thresholds such as information or
notification to the local hard disk for an extended period of time. A low log severity threshold is
one possible cause of frequent logging. Excessive logging frequency can cause undue wear on
the hard disk and may cause premature failure.
